New England Battery Storage



New England Battery Storage is a private energy firm focused on the development of utility-scale battery storage projects. 

Our team is comprised of experienced energy experts who have negotiated a number of complex commercial energy transactions and is backed by a group of energy advisors with clean energy expertise who have developed, constructed and operated numerous independent power generation facilities representing more than $2B in construction costs and over 1,100 MW of capacity. 

NEBS is developing the first fully integrated merchant battery energy storage system in New England.  This energy storage system will participate in the ISO-New England day-ahead and real-time energy markets, operating reserve markets, frequency regulation market, and the forward capacity market. This facility has a commercial on-line date of May 13, 2019. NEBS will have a second battery energy storage system on-line and commercial by the end of 2019. In addition, NEBS has a number of other grid-scale battery energy storage systems in active development.

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Jeff Perry has spent over 30-years in the energy business and has held a number of senior level asset management and commercial positions. 

 At Mirant Corporation, a spin-off of Southern Company and a leading independent power producer, Jeff served as President of the company’s New York and New England assets, which included an electricity generation portfolio of natural gas, diesel, jet fuel, and residual oil facilities totaling approximately 2,500 megawatts.  

 At Veolia North America, Jeff served as Chief Development Officer where he lead business development for Veolia’s United States operation. 

 Jeff has served at the Chairman of the Competitive Power Coalition; a caucus of New England generating companies and as a Board Member of the Independent Power Producers of New York.  In addition, Jeff has served as a Board Member of the Northeast Energy and Commerce Association and as a Advisory Board Member of a Department of Energy sponsored Solar Program on Martha’s Vineyard. 

Jeff holds a B.S. degree from Boston University and a J.D. from the University of Massachusetts School of Law.   He is a member of the Massachusetts Bar.



VICE PRESIDENT Legal & REgulatory Affairs

Dennis J. Duffy has over 30 years of experience in the energy industries.  He joined EMI, a leading developer of traditional and renewable energy facilities, in 1999.   He was previously a partner of the law firm of Partridge, Snow and Hahn and Chairman of the firm’s Public Utilities Practice Group.  Mr. Duffy has represented a wide range of energy entities, including gas and electric utilities, independent generation owners, interstate gas pipelines and renewable energy projects. 

He has testified on energy policy issues before legislative committees including the Commerce and Environment and Public Works Committees of the United States Senate and the Subcommittee on Regulatory Reform of the United States House of Representatives. Mr. Duffy has served as special counsel to the Rhode Island Energy Facility Siting Board and was a member of the Northeast Roundtable of the NEPA Task Force convened by the United States Council on Environmental Quality. 

 He has served as Chair of NEPOOL’s Generation Information System Working Group and Treasurer of the Competitive Power Coalition, a regional trade association, and was a member of Massachusetts Governor Deval Patrick’s technology trade delegation to the People’s Republic of China.  He currently serves as a director of the Slater Technology Fund, a state-supported technology development entity focused on the life science and energy sectors.

Mr. Duffy is a graduate of Columbia Law School and a member of the Rhode Island and Massachusetts Bar Associations.





Mitchell H. Jacobs has been a principal of Energy Management, Inc since 1981. 

He is also an investor in a number of energy and real estate companies, including East Light Partners, Oak Square Partners and Bemis Capital.

Mitchell is a graduate of Harvard College and Cornell University Law School, and is a member of the Massachusetts Bar.

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Jim has been in the energy business since 1975 when he founded Energy Management, Inc. (EMI) and over the ensuing years he built EMI into one of the most successful privately held independent power companies in America.  He recruited and managed a team of dedicated and highly motivated professionals that were able to complete the myriad and complex tasks of creating state of the art power projects.  Jim’s sense of timing and grasp of political and regulatory directions allowed EMI to develop some of the New England’s first gas fired cogeneration and independent power projects as well as the first generation of merchant electric plants in the United States. 

Under Jim’s direction, EMI sold its gas fired generation facilities in 2000 and shifted the company’s focus to developing renewable energy.  Jim’s company developed the two largest biomass power projects in the U.S., each over one hundred megawatts.  One of these projects, The Gainesville Renewable Energy Center in Gainesville, Florida was awarded the 2011 North American Biomass Deal of the Year by Project Finance Magazine.  The company has also developed numerous commercial industrial and utility scale solar energy projects and its affiliated company, SmartFlower Solar, manufactures energy system for on grid, off grid and solar Electric Vehicle charging applications.  Jim is a graduate of Boston University’s School of Public Communications and worked for Warner Communications Corporation prior to founding EMI.